ABBA star Agnetha Fältskog performed live on stage for the first time in a reported 25 years last night (November 12) with Gary Barlow.

The two singers teamed up for the track 'I Should've Followed You Home', which featured on Faltskog's 2013 album 'A'.

They gave it a rare live run through at the first of two Children In Need Rocks events at London's Hammersmith Apollo.

The gig, which was curated by Barlow, saw the X Factor judge perform alongside Fältskog for the rare live slot.

The collaboration lends weight to speculation that ABBA could reform next year for the 40th anniversary of 'Waterloo' - something which Fältskog said they are contemplating.

Other acts meanwhile who performed at the Children In Need gig included Robbie Williams, Little Mix and Kings of Leon.

The line-up for tonight's (November 13) show includes Ellie Goulding, Rizzle Kicks and Tom Odell.